If the starting and ending points of the contour line are the same or close enough that they are within this distance tolerance, and the contour would not cross another contour line by closing the polyline, the polyline will be converted into a polygon.
If you've chosen to close open contours, enter a distance tolerance into the Ends within box.Check the box next to Close open contours in order to convert polyline contours with endings near their beginnings into polygons so they can be filled with a designated fill color.Increases the rate of change in Z with distance from the nearest contour (generates higher peaks and deeper basins) Generates a grid with flat peaks and basins The slope between the nearest two contour lines is multiplied by the Extrapolation factor to perform linear extrapolation. Enter a positive value for the Extrapolation factor if you wish to control the rate of change of z values for grid nodes with only one bounding contour (usually near the peaks and basins of your contours).If you chose to blank the grid outside the convex hull of the data, you can inflate or deflate the convex hull by a certain amount by entering a positive or negative value (in map units) into the Inflate convex hull by box.Check the box next to Assign NoData outside convex hull of data in order to assign NoData values to all grid nodes that fall outside of the convex hull of the data.In the Output Grid Geometry section, set the desired limits for the grid file and the grid spacing/number of nodes, or Copy geometry from another grid.If you would like your grid file to contain a fault, in the Fault Source dropdown list select the base map layer containing your fault BLN file, or else click the browse button, choose the fault BLN file, and click Open.In the Select Field dialog, choose the attribute containing your Z information from the dropdown list, then click OK.Otherwise, click the Browse button next to the list, select your SHP file, and click Open. If your SHP file is plotted as a base map, select the base map layer from the Contour Source dropdown list.Click Grids | New Grid | Grid from Contours.
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